Fig. 1

DS attenuated pain hypersensitivity of somatic pain in vivo. a The chemical structure of DS. DS significantly decreased the writhing times (b) and increased the rate of analgesia (c) in acetic acid-induced mice. Data are expressed as mean ± SEM (n = 9 mice in each group). Statistical significance was determined by one-way ANOVA followed by Tukey’s post hoc analysis where ^**P < 0.01, ^***P < 0.001 vs. saline group